[EX2013] Database is mandatory on Arbitration Mailboxes

1. Remove the FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 e-mail account by using the ADSIEDIT tool. To do this, follow these steps:
1. Click Start, click Run, type adsiedit.msc, and then click OK.
2. Locate the Default Naming Context node, and then locate to the CN=Users container.
3. Locate and then right-click the CN=FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 container. Then, clickDelete.
1. Rerun the Exchange Server 2010 Mailbox role setup application.
2. Create a new federated e-mail account by using the following command:
   New-Mailbox -Arbitration -Name FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 -UserPrincipalName FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042@<Default_Accepted_Domain>


From <http://support2.microsoft.com/kb/978776/en-us>




setup /PrepareAD [/OrganizationName:]
Enable-Mailbox -Arbitration -DomainController  -Identity "SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}"




Set-Mailbox “SystemMailbox{bb558c35-97f1-4cb9-8ff7-d53741dc928c}” -Arbitration -Database “YourDatabaseNameHere”